Subtropical/Tropical swamps are wetlands that are found along the coastline in sub-tropical or tropical areas. For example, the Florida Everglades are a famous example of a subtropical swamp. These swamps are often, but not always, dominated by mangrove trees.

They are inhabited by a large variety of animals and insects. One of the most famous swamp dwellers in America is the American alligator, which makes its home in the Everglades and in swamps along the Gulf coast. It is sometimes joined by the American crocodile. However, subtropical/tropical swamps are also home to a wide variety of birds, including wading birds such as egrets and pelicans. Flamingos are also strongly associated with swamps. Mangrove swamps act as nurseries for the fry of many species of reef fish. Many sea turtles spend at least some of their time in swamps.

The swamp ecosystem is dependent o large numbers of invertebrates including worms, barnacles and oysters. Shrimp and some crabs also live in the swamps. These swamps also provide vital protection for inland areas from hurricanes and strong marine storms.